Vessels Of The Head And Neck Flashcards
Which artery is the principal artery supplying the head and neck?
Common Carotid Artery
How do the right and the left common carotid arteries arise differently?
The right arises deep to the SC joint from the brachiocephalic trunk
The left arises from the arch of the aorta between the brachiocephalic (to its R) and the left subclavian (to its L)
What are the contents of the carotid sheath?
CCA
Internal jugular vein (IJV)
Vagus nerve
Along which landmark does the carotid sheath run?
Trachea
True or false: Common carotid arteries give off no branches
True
At which level does the common carotid arteries bifurcate?
C3/4
Superior border of thyroid cartilage
To which landmark of C6 does the common carotid pass anterior?
Carotid tubercle on TP
Into which arteries does the common carotid bifurcate?
External Carotid Artery
Internal Carotid Artery
What are the branches of the external carotid artery?
Superior Thyroid Artery Ascending Pharyngeal Artery Lingual Artery Facial Artery Occipital Artery Posterior Auricular Artery Superficial Temporal Artery Maxillary Artery
Which vein runs along the common carotid artery?
Internal Jugular Vein
Of what is the internal jugular vein a continuation?
Sigmoid dural venous sinus
True or false: the two IJVs drain blood from the majority of the head and neck
True
What is the upper dilated portion of the IJV?
Superior jugular bulb
True or false: the superior jugular bulb may project into the floor of the tympanic cavity
True
How is the internal jugular veins positioned in relation to the other structures within the carotid sheath?
First lies posterior to the internal carotid artery and vagus nerve
Then lateral to the internal carotid artery and vagus nerve
To which muscles is the IJV deep?
Sternocleidomastoid
What are the tributaries of the internal jugular vein?
Inferior petrosal sinus Pharyngeal veins Common facial vein Lingual vein Superior and middle thyroid veins (Occipital vein - sometimes - otherwise drawings into deep cervical and/vertebral veins)
At which location is the inferior jugular bulb?
Just before the internal jugular vein terminates by joining the subclavian to form the brachiocephalic vein
True or False: External jugular vein is subcutaneous (superficial)
True
True or False: the internal jugular vein drains the cranial vault
True
True or false: paths of veins are highly variable
True
To which muscle is the external jugular vein superficial?
Sternocleidomastoid
At which level does the external jugular vein terminate?
Posterior cervical triangle by joining the subclavian or internal jugular vein
What are the borders of the posterior cervical triangle?
Posterior edge SCM
Anterior edge trapezius
Clavicle
Describe the location of the anterior jugular vein
Suprahyoid region descending on the surface of suprahyoid and infrahyoid muscles
Into which veins do the anterior jugular veins drain?
External jugular or subclavian
What does the superior thyroid artery supply?
Adjacent muscles
Thyroid and parathyroid
Larynx
What does the ascending pharyngeal artery supply?
Pharyngeal muscles Palatine tonsil Prevertebral muscles Tympanic cavity Dura
Which branch is of importance off of the ascending pharyngeal artery?
Middle miningeal branch - passes through foramen lacerum to dura
What does the lingual artery supply?
Principal supply to tongue and floor of mouth
Palatine tonsil
Briefly describe the path of the lingual artery
Deep to digastric tendon and hypoglossus muscle
What are the division of classification of the facial artery branches?
Cervical Branches
Facial Branches
Describe the course of the facial artery
Close to the pharynx then crossing the mandible to ascend lateral to the angle of the mouth alongside the nose and terminates as the angular artery
What are the cervical branches of the facial artery?
Ascending palatine Tonsillar artery Glandular branches Submental artery Muscular branches
What are the facial branches of the facial artery?
Interior labial artery
Superior labial artery
Lateral nasal artery
Angular artery
Describe the path of the occipital artery
From posterior surface of external carotid artery
Closely related to hypoglossal nerve near proximal part
What does the occipital artery supply?
Back of scalp
Which branch of the occipital artery forms anastomoses?
Descending branch running caudal in posterior neck
With which arteries does the descending branch of the occipital artery for anastomoses?
Vertebral artery
Costocervical Artery
Thyrocervical Trunk
Describe the posterior auricular artery
Branches from the posterior surface of the external carotid artery
Passes posterior to external auditory meatus
Describe the superficial temporal artery
Smaller of two terminal branches of the external carotid artery
Supplies TM joint, masseter, temporalis, parotid, and scalp
Runs directly anterior to external auditory meatus
What are the three divisions of the maxillary artery?
Mandibular portion
Pterygoid Portion
Pterygopalatine Portion
Which branches of the maxillary artery arise from the mandibular portion?
Inferior alveolar artery
Middle meningeal artery (foramen spinosum)
Describe the location of the pterygoid portion of the maxillary artery
Arises from the mandibular portion of the maxillary artery lying superficial to the pterygoid process and giving off 4+ branches
What are the branches of the pterygopalatine portion of the maxillary artery?
Posterior superior alveolar artery (molars, gums, maxillary sinus)
Infraorbital artery (infraorbital foramen to mm and skin)
Anterior superior alveolar artery
Greater palatine artery
Lesser palatine artery
Sphenopalatine artery